Centrifugal liquid-separator.



No. 767,956. PATBNTED AUG. 1 1904. B. A. 0. PROLLIUS.

OENTRIFUGAL LIQUID SEPARATOR.

APPLIOATIONTILED OCT. 26, 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

WQQM fin/611607" UNITED STATES Patented August 16, 1904.

PATENT OFFIC CENTRIFUGAL LIQUID-SEPARATOR- srncrrrcarrron forming e ofIietters Patent No.767,956, dated g t 16,1904.

Application filed October 26, 1903. Serial No. 178,623. (No model.)

To all whom/ it may concern.-

ment of parts hereinafter described, illustrated in the accompanyingdrawings, and

' particularly pointed out in the appended claims, it being understoodthat various changes in the form, proportlons, size, and mmor details ofthe structure may be made without departing from the spirit orsacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a sectional elevation of acentrifugalmachine provided with a lining constructed in accordance withthe invention.

plan view of the same. Fig. 3 is an elevation of the lining removed fromthe machine.

Fig. 4 is aview corresponding to Fig. 1, illustrating the centrifugalmachine provided with a plurality of concentrically-arranged linings.

Fig. 5 is a sectional plan view of the device shown in Fig. 4:.

Similar letters of reference are employed to indicate corresponding.parts throughout the several figures of the drawings.

The bowl or drum a of the centrifugal machine may be of any approvedconstruction," 1n the present lnstance belng shown as com-v prising amain cylinder or body portion having threaded upper and lower ends forthe attachment of correspondingly threaded cap and bottom pieces and atthe top is a discharge-tube Z for the milk and an outlet 12 for thecream; I

In an annular space in the bottom section of the drum or bowl is placedthe flanged disk 0, provided with an annular row of perforations d, andto the central portion of this disk Fig. 2 ,is a sectional is securedthe lower end of an inlet-tube Z),

theupper end of which is secured to the top of the cap-piece and servesfor the introduction of the whole milk or other fluid to be separated.

From the periphery of the tube extends a series of radially disposedblades 0, which serve to carry the milk around with the drum or bowl andprevent the swirling action which occurs where a smooth bowl isemployed, and all of these blades are connected at their upper ends to aring f and at their lower ends are secured to the disk 0.

Extending around the series of blades is a lining 'gthat in the presentinstance is formed of comparatively thin sheet metal and is convolutedto present in plan an approximately star-shaped contour, the outerpoints of which rest against the inner wall of the drum or bowl, asshown more clearly in Fig. 2. The

convolutions are arranged in helical form,

presenting a series of channels which are arranged at but a slight anglefrom the vertical, and hence form a plurality of ascending planes, upwhich the fluid, may travel, and in its transit opportunity is affordedfor the separation of the particles of different specific gravity. Atthe top of the lining is a conical collar lb, which leads inward overthe ring f, and at the base portions of the convolutions the metal isextended outward-in order to assist in directing the skimmed milk towardthe periphery of the bowl at the top of the lining. The collar IL fitsimmediately within the conicalportion of a ring z' and is carried by thecap or cover is of the bowl, this ring having a cylindrical portionwhich forms at the top of the bowl an annular milk-space incommunication with the milk-outlet tube Z, while the extreme outer edgeof the collar 2' is arranged at a short distance from the inner' wall ofthe bowl in order to form a comparatively narrow annular passage for theskim-milk. The lining is provided with two sets of openings, theopenings m being placed at the root of the corrugations and alfordingpassages for the inward flow of the cream which may be separated fromthe milk during its transit through the passages afiorded by thecorrugations, the

cream, owing toits lighter specific gravity, flowing inward toward thecream zone, while the milk is held outward and rises gradually along theinward wall of the bowl to finally escape through the outlet Z.

At the crown portions of the corrugations or at one side thereof areopenings '12, which are arranged on that side of the convolutionsopposite the direction of travel of the bowl and lining, so that themilk can pass outward through these openings without churning and willbe distributed in the milk zone near the outer portion of the bowl.

In the operation of the device the whole milk is introduced through thetube 7) and travels outward through the openings (Z in the disk 0, andit immediately commences to separate, being traveled gradually upwardagainst the inner wall of the lining, and thence passes outward from azone of relatively small circumferential velocity to a zone of muchgreater circumferential velocity, where, especially at the outerportions of the convolutions, it will flow outward through the openings92, to the outside of the lining. 1n the various channels between theinner wall of the bowl and the lining the partly-separated liquid willbe acted upon in such manner that the cream, being of lighter specificgravity, Will move inward through the openings 1/), while the skim-milk,on account of the formerly-mentioned smaller velocity, will gather alongthe outer front sides of all of the screwthreads or helicalconvolutions, and by the movement of the latter it will be lifted orpropelled upward and toward the outlet pipe or pipes Z.

The ereamoutlet, consisting of a screw with an eccentric hole, can beadvanced to or re moved from the center by turning the screw.

In Figs. 4c and 5 is shown a lining compris ing a plurality ofconcentric members of substantially the same construction as thatpreviously described. These members are first inserted in place byscrewing them down one L over the other, the necessary spacing distam-ebetween the several members being provided for by soldering or otherwisesecuring them to the lower disk and by providing each with a separateconical ring for seeurement to the inlet-tube 1;. In this modificationthe central tube is reduced in length and extends only to the upperportion ot the innermost lining member; but as all of the meml iers aresecured to this tube the whole may be taken out after first removing thetube by merely grasping the tube 1). The operation is substantially thesame as that previously described, with the exception that it is in mostcases more etfcctive by reason of the fact that the wholemilk volume isdivided into a series of thin concentric layers.

Having thus described the invention, what is claimed. is

1. In a centrifugal machine, a lining convoluted in transverse section,and provided with perforations near the base and crown of each of theconvolutions.

2. In a centrifugal machine, a lining termed of a metallic cylinder)rovided with convolutions arranged on helical lines and lormingrapidly-ascending planes, there being perforations at the base and crownof each of such convolutions.

The combination with a centrifugal machine, of a lining having acylinder eonvoluted in cross-section, a conical rii'ig forming the upperportion of the lining, the metal of which the lining is formed beingbent outward from the base of the upper portion of each convolutiontoward said conical ring.

in witness whereof I. have hereunto setm hand in presence of twowitnesses.

\Vi tnesses:

Minions Mmmnn, h'lANG Us J asses.

